Nine-axis five-linkage turning and milling compound machining center

Abstract

The application relates to the technical field of turning-milling combined machining centers, in particular to a nine-axis five-linkage turning-milling combined machining center, which comprises a rack, a first spindle, a second spindle, a tool spindle and a power tool tower. The first spindle comprises a C1 shaft rotating around the Z axis, and the C1 shaft is connected with a first split base. The second spindle comprises a C2 shaft translating along the Z axis, the C2 shaft can rotate around the Z axis, the C2 shaft is coaxially arranged with the C1 shaft, the C2 shaft is connected with a second split base, and the split bases are provided with double cooling systems. The tool spindle comprises a rotatable B shaft, the B shaft is connected with a power structure driving the B shaft to translate along the X axis, the Y axis and the Z axis. The power tool tower comprises a rotatable tool tower body, and the tool tower body can translate along the Z axis and a ZY inclined axis. The split base reduces the heat transfer efficiency and reduces the deformation degree of the base caused by heat. The double cooling systems inhibit the thermal expansion deformation of the base caused by heating, and avoid the workpiece transfer jamming phenomenon caused by the micro-deformation of the split base.

Description

Technical Field

[0001] This application relates to the field of mill-turn machining centers, and in particular to a nine-axis five-linkage mill-turn machining center. Background Technology

[0002] A mill-turn machining center is a CNC machine tool that integrates turning and milling functions. It can complete multiple machining operations on complex parts in a single setup, significantly improving manufacturing efficiency and precision. The equipment completes various surface machining operations through combined mill-turn motion (generally including milling cutter rotation, workpiece rotation, and axial and radial feed). Among them, the nine-axis five-linkage mill-turn machining center is a high-end model.

[0003] Existing nine-axis five-linkage composite machining centers or CNC machine tools include some equipped with dual spindles. Compared to single spindles, dual spindles can perform more comprehensive machining of workpieces, meeting the needs of more workpieces requiring machining. A nine-axis five-linkage CNC machine tool with application number 202510234922.7 addresses the issue of speed differences that occur when changing spindles for shaft-type parts. It introduces a belt clamping mechanism to hold the workpiece. This belt not only provides flexible clamping of shaft-type workpieces but also compensates for the speed differences that occur during clamping and changing shaft-type parts. This allows for clamping and changing without stopping the machine or using traditional shaft clamping methods. Compared to existing clamping methods, it improves clamping accuracy and effectively mitigates the speed difference problem during clamping.

[0004] The existing technology, including the aforementioned technical solutions, generates a large amount of heat during continuous machining. This heat is transferred to the base supporting the spindle via heat transfer. Due to the thermal expansion effect of the material, the base undergoes slight deformation, causing a shift in the spatial position and direction of the spindle axis. This reduces the workpiece clamping repeatability and machining accuracy. In processes requiring workpiece clamping, such as transferring the workpiece from one spindle to another, the thermal deformation of the base causes coaxiality deviation between the two spindles. This results in radial runout of the workpiece during transfer, which not only affects the smooth clamping and handover of the workpiece by the other spindle but also easily causes mechanical damage to the outer surface of the workpiece, thus affecting product quality and reducing production yield. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a nine-axis five-linkage turning and milling composite machining center. The technical solution adopted by the present invention is as follows: A nine-axis five-linkage turning and milling composite machining center includes: frame; A first spindle, the first spindle including a C1 axis clamping structure that rotates about the Z axis, the C1 axis clamping structure being provided with a first split base; The second spindle includes a C2 axis clamping structure that translates along the Z-axis. The C2 axis clamping structure is rotatable around the Z-axis. The C2 axis clamping structure and the C1 axis clamping structure are coaxially arranged. The C2 axis clamping structure is provided with a second split base. Both the second split base and the first split base are provided with a dual cooling system. The dual cooling system includes an internal cooling system and an external cooling system. The external cooling system includes a cooling cavity, which is disposed inside the first split base and the second split base and surrounds the outer periphery of the first spindle and the second spindle. Coolant is disposed in the cooling cavity, which is provided with an outlet and an inlet. Both the outlet and the inlet are connected to a water supply pipe, which is connected to an external cooling water tank. A tool spindle, the tool spindle including a rotatable B-axis, the B-axis being connected to a power structure that drives the B-axis to translate along the X-axis, Y-axis and Z-axis; A powered turret, comprising a rotatable turret body capable of translation along the Z-axis and the ZY oblique axes.

[0006] Furthermore, the internal cooling system includes a rotary joint, a cooling channel, and a cooling sleeve. The cooling sleeve is fixed inside the first spindle and the second spindle. The cooling channel is a pipe extending axially along the cooling sleeve and is embedded inside the cooling sleeve. The cooling channel is provided with an outlet end and an inlet end. The outlet end and the inlet end are connected to an external cooling water tank through the rotary joint.

[0007] Furthermore, the first split-type base includes a first front base and a first rear base. One end face of the first rear base is fixedly connected to the frame, and the other end face of the first rear base is fixedly connected to the first front base. The first spindle is rotatably connected to the first front base. The second split-type base includes a second front base and a second rear base. One end face of the second rear base is slidably connected to the frame, and the other end face of the second rear base is fixedly connected to the second front base. The second spindle is rotatably connected to the second front base.

[0008] Furthermore, cooling fans are fixedly installed inside both the first and second rear bases.

[0009] Furthermore, the outer surfaces of the first and second front bases are provided with a plurality of evenly distributed fins.

[0010] Furthermore, the frame is slidably provided with a centering structure, which is disposed between the first spindle and the second spindle. The centering structure includes a support base, a centering frame, an upper arc-shaped jaw, and a lower arc-shaped jaw. The upper arc-shaped jaw and the lower arc-shaped jaw are both hinged to the centering frame. The centering frame is fixedly connected to the support base, and the support base is slidably connected to the frame.

[0011] Furthermore, the inner end faces of the upper arc-shaped jaw and the lower arc-shaped jaw are respectively provided with an upper centering wheel and a lower centering wheel, and the inner end face of the centering frame is provided with a main centering wheel, which is located between the upper centering wheel and the lower centering wheel.

[0012] Furthermore, the power structure includes a first power slide rail, a first connecting seat, a second power slide rail, a second connecting seat, a third power slide rail, and a third connecting seat. The third connecting seat is slidably connected to the third power slide rail. The third power slide rail is fixedly disposed on the upper end face of the second connecting seat. The second connecting seat is slidably connected to the second power slide rail. The second power slide rail is fixedly disposed on the side end face of the first connecting seat. The first connecting seat is slidably connected to the first power slide rail. The first power slide rail is fixedly connected to the frame.

[0013] Furthermore, the power turret also includes a fourth connecting seat, a fourth power slide rail, and a fifth connecting seat. The fifth connecting seat is slidably connected to the fourth power slide rail, the fourth power slide rail is fixedly mounted on the upper surface of the fourth connecting seat, and the fourth connecting seat is slidably connected to the frame.

[0014] The beneficial effects of this invention are: By setting up a first split base and a second split base, the heat generated by the spindle operation is physically divided along the conduction path of the base, effectively reducing heat transfer efficiency and minimizing the deformation of the base caused by heat. Combined with the dual cooling system set in the split base, the external and internal cooling systems actively remove the heat generated by the spindle operation, effectively suppressing the thermal expansion deformation of the base caused by temperature rise. This ensures the stability of the coaxiality of the first and second spindles under continuous operation and avoids workpiece transfer jamming caused by micro-deformation of the split base.

[0015] By setting up a centering structure, the coordinated action of the upper arc-shaped jaw, the lower arc-shaped jaw, and the main centering wheel of the centering structure can radially correct the posture of the workpiece before handover, so that the workpiece is coaxial with the first spindle and the second spindle, reducing the amount of runout during workpiece transfer and preventing damage to the workpiece surface.

[0016] This invention, through the configuration of a nine-axis five-linkage motion mechanism, enables integrated processing of complex parts on multiple sides and through multiple processes under a single clamping condition, shortens the manufacturing process chain, improves overall production efficiency, and has high precision and high stability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention (from another angle).

[0019] Figure 3 This is a three-dimensional structural diagram of the centering structure of the present invention.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the power turret of the present invention.

[0021] Figure 5 This is a schematic diagram of the dual cooling system of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the first rear base of the present invention.

[0023] In the picture: 1. Frame; 2. First spindle; 3. C1 axis clamping structure; 4. First split base; 41. First front base; 42. First rear base; 5. Second spindle; 6. C2 axis clamping structure; 7. Second split base; 71. Second front base; 72. Second rear base; 8. Tool spindle; 9. B-axis; 10. Power turret; 11. Turret body; 12. External cooling system; 121. Cooling chamber; 122. Outlet; 123. Inlet; 124. Water pipe; 125. Coolant; 13. Internal cooling system; 131. Rotary joint; 132. Cooling channel; 13 3. Cooling jacket; 14. Cooling fan; 15. Fins; 16. Centering structure; 161. Support base; 162. Centering frame; 163. Upper arc-shaped claw; 164. Lower arc-shaped claw; 17. Upper centering wheel; 18. Lower centering wheel; 19. Main centering wheel; 20. First power slide rail; 21. First connecting seat; 22. Second power slide rail; 23. Second connecting seat; 24. Third power slide rail; 25. Third connecting seat; 26. Fourth connecting seat; 27. Fourth power slide rail; 28. Fifth connecting seat; 29. ​​Fifth power slide rail; 30. Sixth power slide rail; 31. Sixth connecting seat. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this invention. The specific implementation scheme of this invention is as follows: like Figures 1-6As shown, a nine-axis five-linkage turning and milling composite machining center includes a frame 1, a first spindle 2, a second spindle 5, a tool spindle 8, and a power turret 10. The first spindle 2 includes a C1-axis clamping structure 3 that rotates around the Z-axis, and the C1-axis clamping structure 3 is connected to a first split-type base 4. The second spindle 5 includes a C2-axis clamping structure 6 that translates along the Z-axis. The C2-axis clamping structure 6 is rotatable around the Z-axis and is coaxial with the C1-axis clamping structure 3. The C2-axis clamping structure 6 is connected to a second split-type base 7. Both the second split-type base 7 and the first split-type base 4 are equipped with dual cooling systems. The tool spindle 8 includes a rotatable B-axis 9, and the B-axis 9 is connected to a drive mechanism that drives the B-axis 9 along the X-axis and Y-axis. The power turret 10 includes a rotatable turret body 11, which can translate along the Z-axis and ZY-axis. By setting a first split base 4 and a second split base 7, the heat generated by the spindle operation is physically divided along the path of the base conduction, effectively reducing the heat transfer efficiency and the degree of deformation of the base due to heat. Combined with the dual cooling system set in the split base, the external cooling system 12 and the internal cooling system 13 actively remove the heat generated by the spindle operation, effectively suppressing the thermal expansion deformation of the base due to temperature rise, thereby ensuring the stability of the coaxiality of the first spindle 2 and the second spindle 5 under continuous operation, and avoiding the workpiece transfer jamming phenomenon caused by the micro deformation of the split base.

[0025] The dual cooling system includes an internal cooling system 13 and an external cooling system 12. The external cooling system 12 includes a cooling chamber 121, which is disposed within the first split base 4 and the second split base 7, and surrounds the outer periphery of the first spindle 2 and the second spindle 5. The cooling chamber 121 is used to contain coolant 125 and is provided with an outlet 122 and an inlet 123. Both the outlet 122 and the inlet 123 are connected to a water supply pipe 124, which is connected to an external cooling water tank. The external cooling system 12 mainly cools the first spindle 2 and the second spindle 5 from the outside. The low-temperature coolant 125, after being cooled by the external cooling water tank, will enter the cooling chamber 121 through the water inlet 123 via the water supply pipe 124 driven by the external circulation pump. The coolant 125 entering the cooling chamber 121 will surround the outer periphery of the first spindle 2 or the second spindle 5 and absorb the heat generated during operation through convective heat exchange with the outer wall of the first spindle 2 or the second spindle 5. After absorbing heat and heating up, the coolant 125 will flow back to the external cooling water tank through the water outlet 122 and the corresponding water supply pipe 124, completing one external circulation heat exchange process.

[0026] Furthermore, the internal cooling system 13 includes a rotary joint 131, a cooling channel 132, and a cooling sleeve 133. The cooling sleeve 133 is fixed inside the first spindle 2 and the second spindle 5. The cooling channel 132 is a pipe extending axially along the cooling sleeve 133 and is embedded inside the cooling sleeve 133. The cooling channel 132 is provided with an outlet and an inlet, which are connected to an external cooling water tank via the rotary joint 131. The internal cooling system 13 primarily cools the first spindle 2 and the second spindle 5 from inside the spindle. The coolant 125 in the external cooling water tank is driven by an independent high-pressure circulation pump and enters the cooling channel 132 through the inlet end of the rotary joint 131. The coolant 125 entering the cooling channel 132 begins to flow under the action of the cooling jacket 133, thereby carrying out convective heat exchange in the heat source areas inside the first spindle 2 and the second spindle 5 caused by high-speed rotation. It absorbs and carries away a large amount of heat from the spindle core. The coolant 125 that has been heated by heat exchange will flow out from the outlet end of the cooling channel 132 and return to the external cooling water tank through the rotary joint 131 for cooling.

[0027] The external cooling system 12 and the internal cooling system 13 work together to effectively reduce the heat flux conducted from the spindle rotation center to the first split base 4 and the second split base 7, thereby suppressing the thermal expansion micro-deformation of the base caused by temperature rise differences. This ensures the high coaxiality of the first spindle 2 and the second spindle 5 during long-term operation and reduces the risk of radial runout when the workpiece is transferred between the two spindles.

[0028] It should be noted that the first split base 4 includes a first front base 41 and a first rear base 42. One end face of the first rear base 42 is fixedly connected to the frame 1, and the other end face of the first rear base 42 is fixedly connected to the first front base 41. The first spindle 2 is rotatably connected to the first front base 41. The second split base 7 includes a second front base 71 and a second rear base 72. One end face of the second rear base 72 is slidably connected to the frame 1, and the other end face of the second rear base 72 is fixedly connected to the second front base 71. The second spindle 5 is rotatably connected to the second front base 71.

[0029] Furthermore, cooling fans 14 are fixedly installed inside both the first rear base 42 and the second rear base 72. The cooling fans 14 can drive airflow circulation inside the base, accelerating the discharge of heat conducted from the front base to the rear base to the outside or top of the rear base. This effectively suppresses temperature accumulation in the rear base area, reduces the temperature gradient between the first rear base 42 and the first front base 41, and between the second rear base 72 and the second front base 71, and reduces stress deformation. This further avoids additional positional disturbances caused by micro-deformation of the rear base through the connecting surface to the front base, while also preventing hot air from blowing directly onto the front base, thus improving the relative positional stability of the first spindle 2 and the second spindle 5 during operation.

[0030] Specifically, at least one set of cooling fans 14 are fixedly installed in the internal cavities of the first rear base 42 and the second rear base 72. When the device is running, the cooling fans 14 are activated, forming a directional airflow in the rear base cavity, and dissipating heat from the heat dissipation holes on the side or top of the rear base.

[0031] Furthermore, the outer surfaces of the first front base 41 and the second front base 71 are provided with a plurality of evenly distributed fins 15; compared with the smooth outer surface, the arrangement of the fins 15 increases the contact area between the front base surface and the surrounding cold air, thereby increasing the heat dissipation area and improving the heat dissipation effect of the first front base 41 and the second front base 71.

[0032] It should be noted that the frame 1 is slidably provided with a centering structure 16, which is located between the first spindle 2 and the second spindle 5. The centering structure 16 includes a support base 161, a centering frame 162, an upper arc-shaped jaw 163, and a lower arc-shaped jaw 164. The upper arc-shaped jaw 163 and the lower arc-shaped jaw 164 are both hinged to the centering frame 162. The centering frame 162 is fixedly connected to the support base 161, and the support base 161 is slidably connected to the frame 1. The upper arc-shaped jaw 163 and the lower arc-shaped jaw 164 can swing in the plane around the hinge point connected to the centering frame 162 to form an opening and closing action, thereby adapting to workpieces of different diameters. The inner end faces of the upper arc-shaped jaw 163 and the lower arc-shaped jaw 164 are respectively provided with an upper centering wheel 17 and a lower centering wheel 18. The inner end face of the centering frame 162 is provided with a main centering wheel 19, which is located between the upper centering wheel 17 and the lower centering wheel 18. The upper centering wheel 17, the lower centering wheel 18, and the main centering wheel 19 all adopt a free-rotating roller structure, forming rolling contact with the workpiece surface during the centering process, effectively reducing surface damage to the workpiece. Through the synergistic action of the upper arc-shaped jaw 163, the lower arc-shaped jaw 164, and the main centering wheel 19 of the centering structure 16, the orientation of the workpiece is radially corrected before the workpiece is handed over, so that the workpiece is coaxial with the first spindle 2 and the second spindle 5, reducing the amount of runout during workpiece transfer and preventing workpiece surface damage.

[0033] Specifically, during operation, the external drive structure drives the upper arc-shaped chuck 163 and the lower arc-shaped chuck 164 to rotate towards each other around the hinge point, thereby driving the upper centering wheel 17 and the lower centering wheel 18 to press against the workpiece from above and below, respectively. With the help of the main centering wheel 19, the upper centering wheel 17, the lower centering wheel 18 and the main centering wheel 19 will form a three-point positioning in the circumferential direction of the workpiece, which limits the runout of the workpiece and makes the workpiece coaxial with the first spindle 2 and the second spindle 5.

[0034] It should be noted that the power structure includes a first power slide rail 20, a first connecting seat 21, a second power slide rail 22, a second connecting seat 23, a third power slide rail 24, and a third connecting seat 25; the third connecting seat 25 is slidably connected to the third power slide rail 24, and the third power slide rail 24 is fixedly disposed on the upper end face of the second connecting seat 23 for driving the B-axis 9 to translate along the X-axis; the second connecting seat 23 is slidably connected to the second power slide rail 22, and the second power slide rail 22 is fixedly disposed on the side end face of the first connecting seat 21 for driving the B-axis 9 to translate along the Y-axis, thereby realizing the lifting and lowering of the tool spindle; the first connecting seat 21 is slidably connected to the first power slide rail 20, and the first power slide rail 20 is fixedly connected to the frame 1 for driving the B-axis 9 to translate along the Z-axis.

[0035] It should be noted that the power turret 10 also includes a fourth connecting seat 26, a fourth power slide rail 27 and a fifth connecting seat 28. The fifth connecting seat 28 is slidably connected to the fourth power slide rail 27. The fourth power slide rail 27 is fixedly installed on the upper surface of the fourth connecting seat 26 and is used to drive the turret body 11 to translate along the ZY oblique axis. The fourth connecting seat 26 is slidably connected to the frame 1.

[0036] It should be noted that the ZY oblique axis is an oblique axis that forms a 45-degree angle with the Z axis.

[0037] A fifth power slide rail 29 and a sixth power slide rail 30 are fixedly installed on one end face of the frame 1. A sixth connecting seat 31 is slidably installed on the fifth power slide rail 29. The sixth connecting seat 31 is fixedly connected to the second rear base 72 and is used to drive the C2 axis clamping structure 6 to translate along the Z axis. The fourth connecting seat 26 is slidably connected to the sixth power slide rail 30, and the support seat 161 is slidably connected to the sixth power slide rail 30. It is used to drive the turret body 11 and the centering structure 16 to translate along the Z axis.

[0038] This invention, through the configuration of a nine-axis five-linkage motion mechanism, enables integrated processing of complex parts on multiple sides and through multiple processes under a single clamping condition, shortens the manufacturing process chain, improves overall production efficiency, and has high precision and high stability.

[0039] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although the invention has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments are conceivable within the scope of the invention described herein.

Claims

1. A nine-axis five-linkage turning and milling composite machining center, characterized in that, include: Rack (1); The first spindle (2) includes a C1 axis clamping structure (3) that rotates around the Z axis, and the C1 axis clamping structure (3) is provided with a first split base (4); The second spindle (5) includes a C2 axis clamping structure (6) that translates along the Z axis. The C2 axis clamping structure (6) can rotate around the Z axis. The C2 axis clamping structure (6) and the C1 axis clamping structure (3) are coaxially arranged. The C2 axis clamping structure (6) is provided with a second split base (7). Both the second split base (7) and the first split base (4) are provided with a dual cooling system. The dual cooling system includes an internal cooling system (13) and an external cooling system (12). The external cooling system (12) includes a cooling cavity (121). The cooling cavity (121) is located inside the first split base (4) and the second split base (7) and surrounds the outer periphery of the first main shaft (2) and the second main shaft (5). Coolant (125) is provided inside the cooling cavity (121). The cooling cavity (121) is provided with an outlet (122) and an inlet (123). The outlet (122) and the inlet (123) are both connected to a water supply pipe (124). The water supply pipe (124) is connected to an external cooling water tank. The tool spindle (8) includes a rotatable B-axis (9), which is connected to a power structure that drives the B-axis (9) to translate along the X-axis, Y-axis and Z-axis. A power turret (10) includes a rotatable turret body (11) that can translate along the Z-axis and the ZY oblique axis.

2. The nine-axis five-linkage turning and milling composite machining center according to claim 1, characterized in that: The internal cooling system (13) includes a rotary joint (131), a cooling channel (132), and a cooling sleeve (133). The cooling sleeve (133) is fixed inside the first spindle (2) and the second spindle (5). The cooling channel (132) is a pipe extending axially along the cooling sleeve (133). The cooling channel (132) is embedded inside the cooling sleeve (133). The cooling channel (132) is provided with an outlet end and an inlet end. The outlet end and the inlet end are connected to an external cooling water tank through the rotary joint (131).

3. The nine-axis five-linkage turning and milling composite machining center according to claim 1, characterized in that: The first split base (4) includes a first front base (41) and a first rear base (42). One end face of the first rear base (42) is fixedly connected to the frame (1), and the other end face of the first rear base (42) is fixedly connected to the first front base (41). The first main shaft (2) is rotatably connected to the first front base (41). The second split base (7) includes a second front base (71) and a second rear base (72). One end face of the second rear base (72) is slidably connected to the frame (1), and the other end face of the second rear base (72) is fixedly connected to the second front base (71). The second main shaft (5) is rotatably connected to the second front base (71).

4. A nine-axis five-linkage turning and milling composite machining center according to claim 3, characterized in that: Cooling fans (14) are fixedly installed inside both the first rear base (42) and the second rear base (72).

5. A nine-axis five-linkage turning and milling composite machining center according to claim 3, characterized in that: The outer surfaces of the first front base (41) and the second front base (71) are provided with a number of evenly distributed fins (15).

6. A nine-axis five-linkage turning and milling composite machining center according to claim 1, characterized in that: The frame (1) is slidably provided with a centering structure (16), which is located between the first spindle (2) and the second spindle (5). The centering structure (16) includes a support base (161), a centering frame (162), an upper arc-shaped claw (163), and a lower arc-shaped claw (164). The upper arc-shaped claw (163) and the lower arc-shaped claw (164) are both hinged to the centering frame (162). The centering frame (162) is fixedly connected to the support base (161), and the support base (161) is slidably connected to the frame (1).

7. A nine-axis five-linkage turning and milling composite machining center according to claim 6, characterized in that: The inner end faces of the upper arc-shaped claw (163) and the lower arc-shaped claw (164) are respectively provided with an upper centering wheel (17) and a lower centering wheel (18), and the inner end face of the centering frame (162) is provided with a main centering wheel (19), which is located between the upper centering wheel (17) and the lower centering wheel (18).

8. A nine-axis five-linkage turning and milling composite machining center according to claim 1, characterized in that: The power structure includes a first power slide rail (20), a first connecting seat (21), a second power slide rail (22), a second connecting seat (23), a third power slide rail (24), and a third connecting seat (25). The third connecting seat (25) is slidably connected to the third power slide rail (24). The third power slide rail (24) is fixedly disposed on the upper end face of the second connecting seat (23). The second connecting seat (23) is slidably connected to the second power slide rail (22). The second power slide rail (22) is fixedly disposed on the side end face of the first connecting seat (21). The first connecting seat (21) is slidably connected to the first power slide rail (20). The first power slide rail (20) is fixedly connected to the frame (1).

9. A nine-axis five-linkage turning and milling composite machining center according to claim 1, characterized in that: The power turret (10) also includes a fourth connecting seat (26), a fourth power slide rail (27) and a fifth connecting seat (28). The fifth connecting seat (28) is slidably connected to the fourth power slide rail (27). The fourth power slide rail (27) is fixedly installed on the upper surface of the fourth connecting seat (26). The fourth connecting seat (26) is slidably connected to the frame (1).

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